Dogcows Code - chaz/openbox/blob - openbox/openbox.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    openbox.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003        Ben Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "debug.h"
  21 #include "openbox.h"
  22 #include "session.h"
  23 #include "dock.h"
  24 #include "event.h"
  25 #include "menu.h"
  26 #include "client.h"
  27 #include "xerror.h"
  28 #include "prop.h"
  29 #include "screen.h"
  30 #include "startupnotify.h"
  31 #include "focus.h"
  32 #include "moveresize.h"
  33 #include "frame.h"
  34 #include "keyboard.h"
  35 #include "mouse.h"
  36 #include "extensions.h"
  37 #include "menuframe.h"
  38 #include "grab.h"
  39 #include "group.h"
  40 #include "config.h"
  41 #include "mainloop.h"
  42 #include "gettext.h"
  43 #include "parser/parse.h"
  44 #include "render/render.h"
  45 #include "render/theme.h"
  46
  47 #ifdef HAVE_FCNTL_H
  48 #  include <fcntl.h>
  49 #endif
  50 #ifdef HAVE_SIGNAL_H
  51 #  include <signal.h>
  52 #endif
  53 #ifdef HAVE_STDLIB_H
  54 #  include <stdlib.h>
  55 #endif
  56 #ifdef HAVE_LOCALE_H
  57 #  include <locale.h>
  58 #endif
  59 #ifdef HAVE_SYS_STAT_H
  60 #  include <sys/stat.h>
  61 #  include <sys/types.h>
  62 #endif
  63 #ifdef HAVE_SYS_WAIT_H
  64 #  include <sys/types.h>
  65 #  include <sys/wait.h>
  66 #endif
  67 #ifdef HAVE_UNISTD_H
  68 #  include <unistd.h>
  69 #endif
  70 #include <errno.h>
  71
  72 #include <X11/cursorfont.h>
  73
  74 RrInstance *ob_rr_inst;
  75 RrTheme    *ob_rr_theme;
  76 ObMainLoop *ob_main_loop;
  77 Display    *ob_display;
  78 gint        ob_screen;
  79 gboolean    ob_replace_wm = FALSE;
  80
  81 static ObState   state;
  82 static gboolean  xsync = FALSE;
  83 static gboolean  reconfigure = FALSE;
  84 static gboolean  restart = FALSE;
  85 static gchar    *restart_path = NULL;
  86 static Cursor    cursors[OB_NUM_CURSORS];
  87 static KeyCode   keys[OB_NUM_KEYS];
  88 static gint      exitcode = 0;
  89 static gboolean  reconfigure_and_exit = FALSE;
  90
  91 static void signal_handler(gint signal, gpointer data);
  92 static void parse_args(gint argc, gchar **argv);
  93
  94 gint main(gint argc, gchar **argv)
  95 {
  96 #ifdef DEBUG
  97     ob_debug_show_output(TRUE);
  98 #endif
  99
 100     state = OB_STATE_STARTING;
 101
 102     /* initialize the locale */
 103     if (!setlocale(LC_ALL, ""))
 104         g_warning("Couldn't set locale from environment.\n");
 105     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
 106     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
 107     textdomain(PACKAGE_NAME);
 108
 109     g_set_prgname(argv[0]);
 110
 111     if (chdir(g_get_home_dir()) == -1)
 112         g_warning("Unable to change to home directory (%s): %s",
 113                   g_get_home_dir(), g_strerror(errno));
 114
 115     parse_paths_startup();
 116
 117     session_startup(&argc, &argv);
 118
 119     /* parse out command line args */
 120     parse_args(argc, argv);
 121
 122     ob_display = XOpenDisplay(NULL);
 123     if (ob_display == NULL)
 124         ob_exit_with_error("Failed to open the display.");
 125     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
 126         ob_exit_with_error("Failed to set display as close-on-exec.");
 127
 128     ob_main_loop = ob_main_loop_new(ob_display);
 129
 130     /* set up signal handler */
 131     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 132     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 133     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 134     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 135     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 136     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 137     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
 138
 139     ob_screen = DefaultScreen(ob_display);
 140
 141     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 142     if (ob_rr_inst == NULL)
 143         ob_exit_with_error("Failed to initialize the render library.");
 144
 145     XSynchronize(ob_display, xsync);
 146
 147     /* check for locale support */
 148     if (!XSupportsLocale())
 149         g_warning("X server does not support locale.");
 150     if (!XSetLocaleModifiers(""))
 151         g_warning("Cannot set locale modifiers for the X server.");
 152
 153     /* set our error handler */
 154     XSetErrorHandler(xerror_handler);
 155
 156     /* set the DISPLAY environment variable for any lauched children, to the
 157        display we're using, so they open in the right place. */
 158     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 159
 160     /* create available cursors */
 161     cursors[OB_CURSOR_NONE] = None;
 162     cursors[OB_CURSOR_POINTER] =
 163         XCreateFontCursor(ob_display, XC_left_ptr);
 164     cursors[OB_CURSOR_BUSY] =
 165         XCreateFontCursor(ob_display, XC_watch);
 166     cursors[OB_CURSOR_MOVE] =
 167         XCreateFontCursor(ob_display, XC_fleur);
 168     cursors[OB_CURSOR_NORTH] =
 169         XCreateFontCursor(ob_display, XC_top_side);
 170     cursors[OB_CURSOR_NORTHEAST] =
 171         XCreateFontCursor(ob_display, XC_top_right_corner);
 172     cursors[OB_CURSOR_EAST] =
 173         XCreateFontCursor(ob_display, XC_right_side);
 174     cursors[OB_CURSOR_SOUTHEAST] =
 175         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 176     cursors[OB_CURSOR_SOUTH] =
 177         XCreateFontCursor(ob_display, XC_bottom_side);
 178     cursors[OB_CURSOR_SOUTHWEST] =
 179         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 180     cursors[OB_CURSOR_WEST] =
 181         XCreateFontCursor(ob_display, XC_left_side);
 182     cursors[OB_CURSOR_NORTHWEST] =
 183         XCreateFontCursor(ob_display, XC_top_left_corner);
 184
 185     /* create available keycodes */
 186     keys[OB_KEY_RETURN] =
 187         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 188     keys[OB_KEY_ESCAPE] =
 189         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 190     keys[OB_KEY_LEFT] =
 191         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 192     keys[OB_KEY_RIGHT] =
 193         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 194     keys[OB_KEY_UP] =
 195         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 196     keys[OB_KEY_DOWN] =
 197         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 198
 199     prop_startup(); /* get atoms values for the display */
 200     extensions_query_all(); /* find which extensions are present */
 201
 202     if (screen_annex()) { /* it will be ours! */
 203         do {
 204             {
 205                 ObParseInst *i;
 206                 xmlDocPtr doc;
 207                 xmlNodePtr node;
 208
 209                 /* startup the parsing so everything can register sections
 210                    of the rc */
 211                 i = parse_startup();
 212
 213                 config_startup(i);
 214                 /* parse/load user options */
 215                 if (parse_load_rc(&doc, &node))
 216                     parse_tree(i, doc, node->xmlChildrenNode);
 217                 /* we're done with parsing now, kill it */
 218                 parse_close(doc);
 219                 parse_shutdown(i);
 220             }
 221
 222             /* load the theme specified in the rc file */
 223             {
 224                 RrTheme *theme;
 225                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 226                     RrThemeFree(ob_rr_theme);
 227                     ob_rr_theme = theme;
 228                 }
 229                 if (ob_rr_theme == NULL)
 230                     ob_exit_with_error("Unable to load a theme.");
 231             }
 232
 233             if (reconfigure) {
 234                 GList *it;
 235
 236                 /* update all existing windows for the new theme */
 237                 for (it = client_list; it; it = g_list_next(it)) {
 238                     ObClient *c = it->data;
 239                     frame_adjust_theme(c->frame);
 240                 }
 241             }
 242             event_startup(reconfigure);
 243             /* focus_backup is used for stacking, so this needs to come before
 244                anything that calls stacking_add */
 245             focus_startup(reconfigure);
 246             window_startup(reconfigure);
 247             sn_startup(reconfigure);
 248             screen_startup(reconfigure);
 249             grab_startup(reconfigure);
 250             group_startup(reconfigure);
 251             client_startup(reconfigure);
 252             dock_startup(reconfigure);
 253             moveresize_startup(reconfigure);
 254             keyboard_startup(reconfigure);
 255             mouse_startup(reconfigure);
 256             menu_startup(reconfigure);
 257
 258             if (!reconfigure) {
 259                 /* get all the existing windows */
 260                 client_manage_all();
 261                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 262             } else {
 263                 GList *it;
 264
 265                 /* redecorate all existing windows */
 266                 for (it = client_list; it; it = g_list_next(it)) {
 267                     ObClient *c = it->data;
 268                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 269                 }
 270             }
 271
 272             reconfigure = FALSE;
 273
 274             state = OB_STATE_RUNNING;
 275             ob_main_loop_run(ob_main_loop);
 276             state = OB_STATE_EXITING;
 277
 278             if (!reconfigure) {
 279                 dock_remove_all();
 280                 client_unmanage_all();
 281             }
 282
 283             menu_shutdown(reconfigure);
 284             mouse_shutdown(reconfigure);
 285             keyboard_shutdown(reconfigure);
 286             moveresize_shutdown(reconfigure);
 287             dock_shutdown(reconfigure);
 288             client_shutdown(reconfigure);
 289             group_shutdown(reconfigure);
 290             grab_shutdown(reconfigure);
 291             screen_shutdown(reconfigure);
 292             focus_shutdown(reconfigure);
 293             sn_shutdown(reconfigure);
 294             window_shutdown(reconfigure);
 295             event_shutdown(reconfigure);
 296             config_shutdown();
 297         } while (reconfigure);
 298     }
 299
 300     XSync(ob_display, FALSE);
 301
 302     RrThemeFree(ob_rr_theme);
 303     RrInstanceFree(ob_rr_inst);
 304
 305     session_shutdown();
 306
 307     XCloseDisplay(ob_display);
 308
 309     parse_paths_shutdown();
 310
 311     if (restart) {
 312         if (restart_path != NULL) {
 313             gint argcp;
 314             gchar **argvp;
 315             GError *err = NULL;
 316
 317             /* run other window manager */
 318             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 319                 execvp(argvp[0], argvp);
 320                 g_strfreev(argvp);
 321             } else {
 322                 g_warning("failed to execute '%s': %s", restart_path,
 323                           err->message);
 324                 g_error_free(err);
 325             }
 326         }
 327
 328         /* re-run me */
 329         execvp(argv[0], argv); /* try how we were run */
 330         execlp(argv[0], g_path_get_basename(argv[0]),
 331                (char *)NULL); /* last resort */
 332     }
 333
 334     return exitcode;
 335 }
 336
 337 static void signal_handler(gint signal, gpointer data)
 338 {
 339     switch (signal) {
 340     case SIGUSR1:
 341         ob_debug("Caught signal %d. Restarting.\n", signal);
 342         ob_restart();
 343         break;
 344     case SIGUSR2:
 345         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
 346         ob_reconfigure();
 347         break;
 348     case SIGCHLD:
 349         /* reap children */
 350         while (waitpid(-1, NULL, WNOHANG) > 0);
 351         break;
 352     default:
 353         ob_debug("Caught signal %d. Exiting.\n", signal);
 354         /* TERM and INT return a 0 code */
 355         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 356     }
 357 }
 358
 359 static void print_version()
 360 {
 361     g_print("Openbox %s\n", PACKAGE_VERSION);
 362     g_print("Copyright (c) 2006 Mikael Magnusson\n");
 363     g_print("Copyright (c) 2003 Ben Jansens\n\n");
 364     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 365     g_print("This is free software, and you are welcome to redistribute it\n");
 366     g_print("under certain conditions. See the file COPYING for details.\n\n");
 367 }
 368
 369 static void print_help()
 370 {
 371     g_print("Syntax: openbox [options]\n\n");
 372     g_print("Options:\n\n");
 373 #ifdef USE_SM
 374     g_print("  --sm-disable        Disable connection to session manager\n");
 375     g_print("  --sm-client-id ID   Specify session management ID\n");
 376     g_print("  --sm-save-file FILE Specify file to load a saved session"
 377             "from\n");
 378 #endif
 379     g_print("  --replace           Replace the currently running window "
 380             "manager\n");
 381     g_print("  --help              Display this help and exit\n");
 382     g_print("  --version           Display the version and exit\n");
 383     g_print("  --sync              Run in synchronous mode (this is slow and "
 384             "meant for\n"
 385             "                      debugging X routines)\n");
 386     g_print("  --debug             Display debugging output\n");
 387     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 388 }
 389
 390 static void parse_args(gint argc, gchar **argv)
 391 {
 392     gint i;
 393
 394     for (i = 1; i < argc; ++i) {
 395         if (!strcmp(argv[i], "--version")) {
 396             print_version();
 397             exit(0);
 398         } else if (!strcmp(argv[i], "--help")) {
 399             print_help();
 400             exit(0);
 401         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 402             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 403         } else if (!strcmp(argv[i], "--replace")) {
 404             ob_replace_wm = TRUE;
 405         } else if (!strcmp(argv[i], "--sync")) {
 406             xsync = TRUE;
 407         } else if (!strcmp(argv[i], "--debug")) {
 408             ob_debug_show_output(TRUE);
 409         } else {
 410             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 411             print_help();
 412             exit(1);
 413         }
 414     }
 415 }
 416
 417 void ob_exit_with_error(gchar *msg)
 418 {
 419     g_critical(msg);
 420     session_shutdown();
 421     exit(EXIT_FAILURE);
 422 }
 423
 424 void ob_restart_other(const gchar *path)
 425 {
 426     restart_path = g_strdup(path);
 427     ob_restart();
 428 }
 429
 430 void ob_restart()
 431 {
 432     restart = TRUE;
 433     ob_exit(0);
 434 }
 435
 436 void ob_reconfigure()
 437 {
 438     reconfigure = TRUE;
 439     ob_exit(0);
 440 }
 441
 442 void ob_exit(gint code)
 443 {
 444     exitcode = code;
 445     ob_main_loop_exit(ob_main_loop);
 446 }
 447
 448 Cursor ob_cursor(ObCursor cursor)
 449 {
 450     g_assert(cursor < OB_NUM_CURSORS);
 451     return cursors[cursor];
 452 }
 453
 454 KeyCode ob_keycode(ObKey key)
 455 {
 456     g_assert(key < OB_NUM_KEYS);
 457     return keys[key];
 458 }
 459
 460 ObState ob_state()
 461 {
 462     return state;
 463 }